Finding Earth 2.0
HD 187123 · G3 V

HD 187123 b

Rank #5409 of the ranked catalogue · Discovered by Radial Velocity in 1998

HZ 0%M sin i

0.059

Earth-2.0 index

0.074

Earth Similarity Index

0%

Habitable-zone probability

14.20 R⊕

Radius

Planet

Mass166.218 M⊕M sin i
Bulk density0.319 g/cm³
Orbital period3.0966 days
Semi-major axis0.04260 au
Eccentricity0.010
Incident flux738.426 S⊕
Equilibrium temperature1325.1 K
Maximum angular separation0.93 masReflected-light contrast 1.93e-5 at Aᵍ = 0.30 and Lambertian quadrature.
Composite parameter sources4 · mixedThe archive may select different publications for different parameters; mixed-source is disclosed, not automatically penalised.
Default-solution coverage67%0% median composite-to-default difference over shared parameters.

Host star & system

HostHD 187123
Spectral typeG3 V
Effective temperature5790 K
Radius1.150 R☉
Mass1.040 M☉
Distance46.0 pc / 149.9 ly
DiscoveryRadial Velocity, 1998